Specific Installation Guidance

B​ackflow protection


A​ppliances incorporating pumps

Appliances incorporating or supplied via a pump, such as power showers and washing machines, should not be fed from pipework which supplies high risk installations (fluid category risk 4 or 5) such as shattaf bidet douches.



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Uncontrolled if downloaded. This is informative, non-statutory guidance and intended for general guidance purposes only; it is subject to change.

Compliance with this information should not be relied upon as guaranteeing no enforcement action will be taken by water undertakers. Water Regs UK accepts no liability for loss, indirect or consequential loss arising from or in connection with this guidance document.